The United States' boundaries have expanded over the centuries - and at the same time, Americans' concept of their country has grown as well. The nation the world knows today was shaped by centuries of thinkers and events. Harriet Tubman is one of the many individuals who contributed to the United States.
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The United States' boundaries have expanded over the centuries - and at the same time, Americans' concept of their country has grown as well. The nation the world knows today was shaped by centuries of thinkers and events. Harriet Tubman is one of the many individuals who contributed to the United States.
Read Less
